A323816 - OEIS

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A323816 as a simple table

n	a(n)
0	1
1	0
2	1
3	12
4	1993
5	67098768
6	144115187673233113
7	1329227995784915871895000745158568460
8	226156424291633194186662080095093570015284114833799899660370362545578585265

[1,0,1,12,1993,67098768,144115187673233113, 1329227995784915871895000745158568460, 22615642429163319418666208009509357001528411483379\ 9899660370362545578585265]